Delphi TC8404 rear upper control arm for the 2017-2026 Audi Q7 and other vehicles connects the rear wheel to the vehicle and guides its movement as the suspension travels. This Delphi control arm is sold as a single arm.
- Control arm withstands temperatures below -40 degrees C and over 120 degrees C, plus 720 hours of salt spray exposure
- Every Delphi control arm gets 100% crack detection and ultrasonic flaw detection
- Robot welding for consistent performance and quality
- Ball studs machined to micron tolerances for durability and smooth joint operation
- Anti-corrosion protection applied to each control arm
Quick facts
- Part: Delphi TC8404 control arm
- Also called: suspension control arm
- Fits: 2017-2026 Audi Q7 and other vehicles
- Position: Rear Upper Forward
- Condition: New
A worn suspension control arm can show up as a clunk over bumps, uneven tire wear or loose, wandering handling. Before you replace the arm, rule out worn shocks, tire problems and alignment, since they can produce similar signs.
Fits
The 2017-2026 Audi Q7, the 2019-2026 Audi A6 Quattro and the 2019-2026 Audi Q8 are among the vehicles this arm fits. This listing is one arm; the other side of the same rear axle is normally done at the same time.
Specifications
Fit and size
- Position: Rear Upper Forward
- Quantity per vehicle: 2
- Sold as: 1 control arm per listing
Build and materials
- Condition: New
- Protection: anti-corrosion protection on each part
- Country of origin: Turkey
In the box
One control arm. The vehicle takes two, one for each side of the rear axle.
Interchange: 4M0 505 323 G · 85E 505 323 · 958 505 323 G
LA12556 · KSC6202
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
4M0 505 323 G, 85E 505 323, LA12556, KSC6202, 958 505 323 G
Frequently Asked Questions
Will this Audi Q7 control arm fit a 2017-2026 Audi Q7?
Yes. Delphi TC8404 is a rear upper control arm for the 2017-2026 Audi Q7. If your car is not named on this page, look it up in the "Vehicles it fits" section.
Is the Delphi TC8404 sold singly or as a pair?
It is sold singly. This listing is one control arm, and the vehicle takes two, one per side, so the other side needs a second arm.
What temperatures and salt spray was this Delphi control arm tested to?
The control arm withstands temperatures below -40 degrees C and over 120 degrees C, and it is exposed to 720 hours of salt spray.
What can a worn rear upper control arm sound or feel like?
A clunk over bumps, uneven tire wear or loose handling can be signs of a worn arm. A shop can inspect the ball stud and joint for play.
Does the Delphi TC8404 replace number 4M0 505 323 G?
Yes. 4M0 505 323 G is one of the numbers listed as an interchange for Delphi TC8404.
